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NEW: 300 Whisper Forums!
After considerable frustration on my part, I have finally managed to get a new forum up and running. The forum includes two areas, one for area for 300 Whisper rifles and pistols and a second for reloading and ammo issues. I have a huge number of visitors that come to these pages each day so please drop in the forum and say "Hi" and share your projects!
Note: The material on this page was provided by J.D. Jones
of SSK Industries and he has given permission for it's use.
Click HERE to go to SSK Industries
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300 WHISPER DATA (Super-sonic)
(.221 REMINGTON FIRE BALL PARENT CASE)
REM. 7-1/2 PRIMER, 16.5-INCH BARREL, 70 ° F |
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Powder Charge Grains
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Powder |
Average FPS/FPE |
Extreme Spread Notes
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125-Grain Nosler Ballistic Tip (Temperature 60-65F) |
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20.6 |
Hodgdon 110 |
2333/1511 |
20 Bolt Gun (BG) |
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20.6 |
Hodgdon 110 |
2283/1447 |
64 AR-15 |
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22.0 |
Hodgdon 110 |
2438/1650 |
31 BG |
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150-Grain Bullet (Temperature 60-65F) |
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18.8 |
AA No. 2015 BR |
1615/869 |
29 |
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18.9 |
Reloader 7 |
1834/1121 |
54 |
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20.2 |
AA No. 1680 |
1994/1325 |
40 |
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18.0 |
Hodgdon 110 |
2073/1432 |
13 Bal Tip |
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18.0 |
Hodgdon 110 |
2014/1351 |
29 AR-15 |
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168-Grain Bullet (Temperature 60-65F) |
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18.8 |
AA No. 2015 BR |
1672/1043 |
28 |
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18.9 |
Reloader 7 |
1823/1240 |
19 |
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20.2 |
AA No. 1680 |
1906/1356 |
12 |
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17.2 |
Hodgdon 110 |
1958/1431 |
27 |
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190-Grain Bullet (Temperature 60-65F) |
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17.7 |
AA No. 2015 BR |
1564/1032 |
18 |
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17.9 |
AA No. 1680 |
1754/1298 |
34 |
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15.4 |
Hodgdon 110 |
1725/1256 |
40 |
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220-Grain Bullet (Temperature 60-65F) |
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15.6 |
AA No. 2015 BR |
1429/998 |
25 w/out slow shot |
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15.4 |
Reloader 7 |
1485/1078 |
47 |
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15.6 |
AA No. 1680 |
1467/1052 |
64 BG |
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15.6 |
AA No. 1680 |
1492/1088 |
11 AR-15 |
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12.5 |
Hodgdon 110 |
1412/974 |
47 |
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9.1 |
Hodgdon 110 |
1070/559 |
49 |
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250-Grain Bullet (Temperature 60-65F) |
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12.0 |
AA No. 2015 BR |
1101/673 |
42 |
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12.1 |
Reloader 7 |
1211/814 |
44 |
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13.9 |
AA No. 1680 |
1304/900 |
38 |
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14.6 |
AA No. 1680 |
1377/1011 |
36 AR-15 (240 gr.) |
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12.0 |
Hodgdon 110 |
1376/1009 |
46 (240 gr.) |
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Note: 250 grain bullets are no longer in production. The 240 Sierra Matchking replaces it. Two decimal charge weights were obtained using an electronic scale by averaging ten dropped charges. |
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